From owner-freebsd-questions Fri Jan 5 18:11:35 2001 From owner-freebsd-questions@FreeBSD.ORG Fri Jan 5 18:11:33 2001 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from grumpy.dyndns.org (user-24-214-56-41.knology.net [24.214.56.41]) by hub.freebsd.org (Postfix) with ESMTP id C980A37B400 for ; Fri, 5 Jan 2001 18:11:32 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by grumpy.dyndns.org (8.11.1/8.11.1) with ESMTP id f062B3p31698; Fri, 5 Jan 2001 20:11:04 -0600 (CST) (envelope-from dkelly@grumpy.dyndns.org) Message-Id: <200101060211.f062B3p31698@grumpy.dyndns.org> X-Mailer: exmh version 2.2 06/23/2000 with nmh-1.0.4 To: "Artem Koutchine" Cc: questions@FreeBSD.ORG From: David Kelly Subject: Re: Building a local network on switches (ANTISNIFFER measures) In-reply-to: Message from "Artem Koutchine" of "Fri, 05 Jan 2001 17:56:31 +0300." <001101c07727$b7040de0$0c00a8c0@ipform.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 05 Jan 2001 20:11:03 -0600 Sender: dkelly@grumpy.dyndns.org Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG "Artem Koutchine" writes: > Hello! > > We have a sniffer problem in our quite distributed network, because it is > built using hubs. We trying to replace them with switches and as an > experiment got outselves a CNET PowerSwitch CNSH-800 switching hub. > However, it does not have any kind of programmatic control and learnes MAC > addresses itself. There are "managed switches" and "unmanaged switches". You have an unmanaged switch. You might shop for a managed switch. Expect to pay twice as much. Probably more as unmanaged switches have become commodity items. MAC spoofing is as simple as "ifconfig fxp0 lladdr 1;2:3:4:5:6". I do it myself rather than call my ISP and change my registered MAC address. Then again, guess the support line is staffed right now, so maybe I really oughta call. Darn! I forgot what the card's real MAC is. Guess I have to go look and see how to un-lladdr the interface. Maybe I can drop it, then add it, and get the one out of hardware. Heaven forbid that I might have to reboot to get the default... Hey that's it. Its in /var/run/dmesg.boot. Thanks for the help! Couldn't figure that out until I typed it. -- David Kelly N4HHE, dkelly@hiwaay.net ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message